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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
This hook occurs 3 times in this file.
| Line | Code |
|---|---|
| 3523 | * @since 4.2.0 |
| 3524 | * |
| 3525 | * @param array $args Arguments passed to get_avatar_data(), after processing. |
| 3526 | * @param int|object|string $id_or_email A user ID, email address, or comment object. |
| 3527 | */ |
| 3528 | $args = apply_filters( 'pre_get_avatar_data', $args, $id_or_email ); |
| 3529 | |
| 3530 | if ( isset( $args['url'] ) && ! is_null( $args['url'] ) ) { |
| 3531 | /** This filter is documented in wp-includes/link-template.php */ |
| 3532 | return apply_filters( 'get_avatar_data', $args, $id_or_email ); |
| 3533 | } |
| 3534 | |
| 3535 | $email_hash = ''; |
| 3536 | $user = $email = false; |
| 3537 | |
| 3538 | // Process the user identifier. |
| 3539 | if ( is_numeric( $id_or_email ) ) { |
| 3540 | $user = get_user_by( 'id', absint( $id_or_email ) ); |
| 3541 | } elseif ( is_string( $id_or_email ) ) { |
| Line | Code |
| 3560 | * |
| 3561 | * @since 3.0.0 |
| 3562 | * |
| 3563 | * @param array $types An array of content types. Default only contains 'comment'. |
| 3564 | */ |
| 3565 | $allowed_comment_types = apply_filters( 'get_avatar_comment_types', array( 'comment' ) ); |
| 3566 | if ( ! empty( $id_or_email->comment_type ) && ! in_array( $id_or_email->comment_type, (array) $allowed_comment_types ) ) { |
| 3567 | $args['url'] = false; |
| 3568 | /** This filter is documented in wp-includes/link-template.php */ |
| 3569 | return apply_filters( 'get_avatar_data', $args, $id_or_email ); |
| 3570 | } |
| 3571 | |
| 3572 | if ( ! empty( $id_or_email->user_id ) ) { |
| 3573 | $user = get_user_by( 'id', (int) $id_or_email->user_id ); |
| 3574 | } |
| 3575 | if ( ( ! $user || is_wp_error( $user ) ) && ! empty( $id_or_email->comment_author_email ) ) { |
| 3576 | $email = $id_or_email->comment_author_email; |
| 3577 | } |
| 3578 | } |
| Line | Code |
| 3621 | |
| 3622 | /** |
| 3623 | * Filter the avatar data. |
| 3624 | * |
| 3625 | * @since 4.2.0 |
| 3626 | * |
| 3627 | * @param array $args Arguments passed to get_avatar_data(), after processing. |
| 3628 | * @param int|object|string $id_or_email A user ID, email address, or comment object. |
| 3629 | */ |
| 3630 | return apply_filters( 'get_avatar_data', $args, $id_or_email ); |
| 3631 | } |
| 3632 | |